Punching-machine.



No. 650,692. Patented May 29, I900.

A; SGHARFL. PUNGHING MACHINE.

(Apphcation filed. Feb 91, 1900) (No Model.) 3 Sheets-Sheet I.

m: NORRIS vrrzas co, PNOTO-LITHO.. WASHINGTON, n. c

Patented May 29, I900.

. scuAnrL. PUNGHING MACHINE.

(Apphcahon filed Feb 21 1900) 3Shaets-Sheei 2.

(No Model.)

Sky 2 No. 650,692. Patented May 29, I900. A. SCHARFL.

PUNCHING MACHINE.

(Application flled Feb; 21, 1900.

3 Sheets-Sheai 3 (No Model.)

V/////A i- 22 17644 ed M 'mz uzmms PETERE co. PHO

FFICE.

ANDREAS scnARrL, or MUNICH, GERMANY.

PUNCHlNG-MACHINE.

SPECIFICATION formingpart of Letters Patent No. 650,692, dated 29, 1900.

Application filed February 21; 1900. Serial No. 60 27- N model T0 atwhom it may concern:

Be it known that I, ANDREAS SCHELRFL, a citizen of Germany, residing atMunich, Bavaria, Germany, have invented certain new and usefulImprovements in Punches; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to punching-machines in which the punch-holdercan be connected and disconnected from the eccentricbar by certain novelmeans and also the punch-holder can be raised and lowered by the samemeans.

In the accompanying drawings, Figure 1 is a side elevation of a punchembodying my invention in its preferred form. Fig. 2 is a front view ofthe same; Fig. 3, a sectional view showing the punch-holder andeccentricbar coupled. Fig. 4 is a section on the line A B of Fig. 3;Fig. 5, a section on the line C D, Fig. 3; Fig. 6,'a view similar toFig. 3, but showing the punch-holder and eccentricbar disconnected; Fig.7, a section on the line E F, Fig. 6. Figs. 8, 9, and 10 show amodification.

Referring to the drawings, a is the eccentric-bar engaging an eccentricc by its upper end and having its lower end sliding in a guideway in theframe, as shown in Figs. 2, 4:, and 7. In this guideway also slides thepunch-holder bf The adjacent ends of the eccentric-bar and punch-holderare each re duced or otherwise so disposed that two of theirlongitudinal faces are in contact for a short distance in certainpositions of these' members, as shown in Fig. 8.

The extremity of the bar a has a transverse aperture in which slides apin (1, and the upper end of the punch-holder b has a similareccentric-bar, I provide a pin 9, secured to a suitable slide h,reciprocating in the frame 6. This pin 9 is smaller than the apertureinthe punch-holder, so that it will not interfere with the movement ofthe latter.

In the frame e is mounted a short shaft 2', having an operating-handle kon one extremity. On this shaft is also secured a disk m, havingprojections 19 and q, shaped, preferably, as shown in Fig. 5, and also aspringpin l, which latter can engage a notch in. the slide it.

The punch-holder has a lug 0, disposed in the path of movement of theprojection q, and also a lug 11., arranged to be brought into contactwith the projection 19. The lug 0 slides in an aperture in thepunch-holder and is normally retained in the position shown by a spiralspring. The shaft 2' has also a disk .9, that has a flattened portion onits periphery, on which bears a spring 1", which latter tends to retainthe disk in the position shown in Fig. 3.

With the parts in the position shown in Fig. 3 the punch-holder and theeccentricbar are coupled together. When it is desired to disconnectthem, the disk m is rotated in the direction of the arrow, Fig. 3, bythe handle k, by which movement the pin Z, engaging the notch of theslide h, moves it and the pin g forward, which latter will impinge onthe pin 61 and force it out of the aperture in the punch-holder, thusdisconnecting the bar and the punch-holder. On a further movement of thedisk m the projection 19 will engage the lug n, and the eccentric-rodbeing now disengaged from the punch-holder the latter will be lowered tothe position shown in Fig. 6. During the movement of the disk m theprojection q will impinge on the log 0, which will slide inwardly andallow this projection to pass it, being returned at once to its normalposition by the spiral spring; but when the diskm is turned in theopposite direction, as indicated in Fig. 6, the projection q will engagethe pin 0, and consequently will raise the punch-holder 1) until theapertures in it and the bar a again register, when the pin (1 will becaused by its spring f to again connect these two members. Thespring-pinZ during this latter movement of the diskm will impinge on theslide 7L and be pressed inwardly until it arrives at the notch in saidslide, when its spiral spring will force it into the said notch.

In the above-described arrangement the eceentric-shaf t is parallel tothe frame (2? Figs. 8 and 9 show another arrangement of the machine,inwhich the eccentric-shaft is arranged in a transverse direction to theframe.

The punch-holder Z),being vertically guided in the body a, is in itsupper forked part curved in such a manner over the eccentricc that thelatter can move quite freely. The two parts of the fork are connected bya crosshead 1, thus forming a kind of frame surrounding the eccentric.The working of the punch-holder?) by the eccentric cis performed in sucha manner that the eccentric when going downward presses on the tongue,2, and while in going upward the punch-holder is lifted by the arm 2 ofthe disk 3.

The tongue .2 and disk 3 supplant the guide necessary for the eccentricand allow at the same time, by means of the coupling mechanism, that thepunch-holder I) can be made independent of the movement of theeccentric. This is obtained in the following way: The disk 3, with itsarm 2, can by means of levers be turned from the position it occupies inFig. 8 to the position shown in Fig. 9, whereby the arm 2 is placeddirectly over a recess 4 of the eccentric 0. Since by the arrangement ofrecess 4 in the eccentric the arm 2 can pass freely, the piece I) canalso go down so far till the arm 2 meets again on recess 4. This isquite sufiicient for connecting the punch on the work-piece. The leversystem, consisting of the lever 5, firmly connected with the shaft ofthe disk 3 of the connectin g-rod (Land the double lever 7,is worked bythe elastic bolt Z of disk m, which can be turned by means of the handle7c. Fig. 9 shows the position in which the bolt 1 has turned the doublelever 7 so far that the arm 2 of disk 3 leaves its support on theeccentric c. If the rotation of the disk m is continued, the leversystem 5 6 7 returns to its original position, however the arm 2 lagsbe- -hind, because the punch-holder b, and with it the disk 3, has gonedown so far that the arm 2 rests on the recess 4 of the eccentric. Inorder to make the disk 3 independent of its shaft, the former has asegmental recess arranged in this manner that a lug fixed to the shaftcatches the disk in turning the shaftin one direction, but is disengagedon turning the same in the opposite direction. After the eccentric c hasgone down the disk 3 is placed by the spiral spring 11 in the originalposition. This mechanism would be sufficient for disengaging thepunch-holder Z) and for making its movement independent of the drivingdevice; but the working of thcpunching-machine requires that thepunch-holder can be lifted and lowered by the lever 75 at the same time.This is accomplished by the following contrivance:

On a shaft 1', which can he turned by the lever 76, are fixed two disksm and 10. The disk m is arranged on the outside of the frame e, whilethe disk 10, provided with a peg q, is within the frame. By turning thelever to the left the peg q engages the tappets 0 and a, fixed to thepunch-holder b, whereby the latter are moved up and down. If the leverand the disk 10 are afterward turned back, the peg q engages the tappet0 and lifts the punch-holder. The bolt 1 of the disk m comes by thisrevolution in contact with the double lever 7 and is pressed back tillthe lever '7 is passed. Therefore by simply turning the lever 70 thelever system is uncoupled and the punch-holder can at the same time belifted and lowered by means of the disk 10 on the tappet q.

The above description, as well as the drawings, refers especially to apunching-machine driven by a toothed segment, and the eccentric-shaftexecutes no full revolution; but it is easy to furnish this kind ofpunching-machines also with continuous revolving shafts, and in thiscase the recess 4 of the eccentric is superfluous. The arm 2 musttherefore be bent back so far that it can give way to the eccentric.

Having now particularly described and ascertained my invention, I claimthe following:

1. The combination in a machine of the character described, of apunch-holder having a transverse aperture in its upper end, anactuating-bar having a transverse aperture in its lower end, saidmembers adapted to be brought together with said apertures registering,a pin adapted to slide in said apertures when registering and couplesaid members, a spring for retaining the pin in position to couple saidmembers, and means disconnected therefrom for moving said pin out of theaperture in one member, substantially as set forth.

2. The combination in a machine of the characterdescribed, of apunch-holder having a transverse aperture in its upper end, anactuating-bar having a transverse aperture in its lower end, saidmembers adapted to be brought together with said apertures registering,a pin sliding in the aperture in said actuating-bar and adapted to enterthe aperture in the said punch-holder to couple said members, a springbearing on the end of said pin for retaining it in position to couplesaid members, and means disconnected therefrom for moving the said pinout of the aperture in the punch-holder, substantially as set forth.

3. The combination in a machine of the character described, of apuch-holder having a transverse aperture in its upper end, anactuating-bar having a transverse aperture in its lower end, saidmembers adapted to be brought together with said apertures registering,a pin adapted to slide in said registering apertures and couple saidmembers, a spring secured to the frame of the machine and bearing on theextremity of said pin, and means disconnected therefrom for moving saidpin out of the aperture in one of said members, substantially as setforth.

4. The combination in a machine of the character described, of apunch-holder having a transverse aperture in its upper end, anactuating-bar having a transverse aperture in its lower end, saidmembers adapted to be brought together with said apertures registering,a pin sliding in the said aperture in the actuating-bar and adapted toenter the said aperture in the punch-holder to couple the members, aspring bearing on the end of said pin for retaining it in position tocouple said members, a slide mounted in a guideway in the frame andadapted to be reciprocated in a direction transverse to thepunch-holder, a projection on said slide adapted to enter said aperturein the punch-holder and force the said pin out of said aperture, andmeans for actuating said slide, substantially as set forth.

5. The combination in a machine of the character described, of apunch-holder having a transverse aperture in its upper end, an

actuating-bar having a transverse aperture in its lower end, saidmembers adapted to be brought together with said apertures registering,a pin sliding in the said aperture in the actuating-bar and adapted toenter the said aperture in the punch-holder to couple the members, aspring bearing on the end of said pin for retaining it in position tocouple said members, a slide mounted in a guideway in the frame andadapted to be reciprocated in a direction transverse to thepunch-holder, a projection on said slide adapted to enter said aperturein the punch-holder and force the said pin out of said aperture, meansfor actuating said slide, said slide having a notch in one side, a shaftmounted in the frame of the machine, a disk secured to said shaft andhaving a spring projection adapted to engage the Wall of said notch onthe rotation of said disk to operate said slide, and an actuatinghandlemounted on said shaft, substantially as set forth.

6. The combination in a machine of the character described, of apunch-holder having a transverse aperture in its upper end, anactuating-bar having a transverse aperture in its lower end, saidmembers adapted to be brought together with said apertures registering,a pin sliding in the aperture in said actuating-bar and adapted to enterthe aperture in the said punch-holder to couple said members, a springbearing on the end of said pin for retaining it in position to couplesaid members, and means for moving the said pin out of the aperture inthe punch-holder and then forcing the punch-holder downwardly,substantially as set forth.

7. The combination in a machine of the character described, of apunch-holder havin g a transverse aperture in its upper end, anactuating-bar having a transverse aperture in its lower end, saidmembers adapted to be -brought together with said apertures registering,a pin sliding in the aperture in said actuating-bar and adapted to enterthe aperture in the said punch-holder to couple said members, a springbearing on the end of said pin for retaining it in position to couplesaid members, and means adapted to move the said pin out of the aperturein the punchholder and then force the punch-holder downwardly, saidmeans also adapted upon a reverse movement to raise the punch-holder tothe position for coupling, substantially as set forth.

8. The combination in a machine of the character described, with apunch-holder and an actuating-bar, of means for coupling saidmembers,and means forluncoupling said members and then forcing thepunch-holder downwardly, substantially as set forth.

9. The combination in a machine of the character described, with apunch-holder and an actuating-bar, of means for coupling saidmembers,and means for uncoupling said members and then forcing saidpunch-holderdownwardly, said latter means also adapted upon a reversemovement to raise the punch-holder to the position for coupling with theactuating-bar, substantially as set forth.

actuating-bar and adapted to enter-the apertu re in the punch-holder tocouple the members, a spring bearing on the end of the said pin forretaining it in position to couple said members, a slide mounted in aguideway in the frame, and adapted to be reciprocated in a directiontransverse to the punch-holder and force the said pin out of theaperture in the punch-holder, means for actuating said slide, said slidehaving a transverse notch in one side, a shaft mounted in the frame ofthe machine, a disk secured to said shaft and having a spring projectionadapted to engage the wall of said notch and move said slide on therotation of the disk, an actuating-handle mounted on said shaft, a lugprojecting from said disk, a lug projecting from the punchholder andarranged in the path of movement of said lug on the disk, said lugsadapted to contact to force the punch-holder downwardly on the furtherrotation of the disk after the disk has actuated said slide to uncouplethe said members, substantially as set forth.

11. The combination in a machine of the character described, of apunch-holder having a transverse aperture in its upper end, anactuating-bar having a transverse aperture in its lower end, saidmembers adapted to be brought together with said apertures registerin g,a pin sliding in the aperture in the ac tu atin g-bar and adapted toenter the aperture in the punch-holder to couple the members, a springbearing on the end of the said pin for retaining it in position tocouple said members, a slide mounted in a guideway in the frame andadapted to be reciprocated in a direction transverse to the punch-holderand force the said pin out of said aperture, means for actuating saidslide, said slide having a notch in one side, a shaft mounted in theframe of the machine, a disk secured to said shaft and having a springprojection adapted to engage the wall of said notch and move said slideon the rotation of said disk, an actuating-handle mounted on said shaft,a lug projecting from said disk, a lug projecting from the punch-holderand arranged in the path of movement of said lug on the disk, said lugsadapted to contact to force the punch-holder downwardly on the furtherrotation of the disk afterthe disk has actuated said slide to nncouplethe said members, another lug projecting from said disk, a springpin onthe punch-holder disposed in the path of movement of said latter lug andadapted to retreat to allow the lug to pass downwardly without movingthe punchholder, but to raise the punch-holder on the reverse movementof the disk, substantially as set forth.

12. The combination in a machine of the character described,with apunch-holder, and an actuating-bar, of means for automatically couplingsaid members when together, and means for uncoupling said members andthen forcing the punch-holder downwardly, substantially as set forth.

13. The combination in a machine of the character described,with apunch-holder, and an actuating-bar, of means for automatically couplingsaid members when together, and means for uncoupling said members andthen forcing said punch-holder downwardly, said latter means alsoadapted upon a reverse movement to restore the punch-holder to theposition for coupling with the aetuating-bar, substantially as setforth.

14. The combination in a machine of the character described, with apunch-holder and an actuating-bar, of means for automatically couplingsaid members when together, a slide arranged to uncouple said members,means arranged to first actuate said slide to uncouplc said members andthen to force the punchholder downwardly, said latter means also adaptedupon a reverse movement to restore the punch-holder to the position forcoupling with the actuating-bar, substantially as set forth.

15. The combination in a machine of the character described, of apunch-holder, bars extending upwardly therefrom, a yoke connecting saidbars, an arm pivoted to said yoke and extending downwardly between saidbars, an eccentric extending between said bars and engaging theextremity of said arm, said eccentric having a notch in its periphery, ablock lying between the eccentric and the punch-holder, a disk pivotedto the framework of the machine, a spring-pin mounted on said disk, alever pivoted to the frame of the machine and engaging said spring-pin,an arm secured to said arm mounted on the yoke, a rod connecting saidlatter arm with said lever, a disk secured to said disk, a lug on saidlatter disk, a spring-pin on the punchholder arranged to engage the saidlug on the disk and raise the punch-holder, and another pin on thepunch-holder also arranged to engage said lug to force the punch-holderdownwardly, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

ANDREAS SCIIKRFL.

Witnesses:

MARY PALNBERGER, GUSTAVUS Sons.

